Get flatter panels with Linear

Polycarbonate sanding blocks built for more consistent bodywork. See the difference in the demo.

Shop sanding blocks See what’s new

The Essential Sets

Our three best-selling sets — Master, Labor Saver, and Starter. Every set ships with a Limited Lifetime Warranty.

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New from Linear

From blocking to the final finish.

Explore our latest sanding tools, sealers, clearcoat, and reducers.

Linear T-Handle Flex Set showing 24-inch, 16-inch, and 10-inch sanding blocks
Available now

T-Handle Flex Set

24″, 16″, and 10″ polycarbonate blocks. CNC cut and routered, with a lifetime warranty and satisfaction guarantee.

$140.00 Shop the set
Linear LC-410 IHS Glamour Clearcoat and LA-412 activator kit
Available now

LC-410 Premium Clearcoat

68% solids IHS glamour clear. High resin content, reduced shrinkage, excellent layout, and enhanced UV protection. 5-liter kit.

$720.00 Shop the clearcoat
Linear LR-70 urethane reducer, 70 degrees, 5 liters (170 oz)
Available now

LR-Series Urethane Reducers

Choose LR-70, LR-85, or LR-95 on one page. Each can contains 5 liters (170 oz).

From $150.00 Choose your reducer
Linear L-118 Gray Epoxy Sealer and L-121 Epoxy Sealer Activator, one gallon each
Preorder

L-Series Epoxy Sealer Kit

Choose L-117 Black or L-118 Gray. Each 1:1 kit makes two sprayable gallons. Estimated to ship around October 19, 2026.

$440.00 Choose your sealer

What Our Customers Say

★★★★★

"I wet sanded and buff/polished everything on a regular basis. When I used this block, it was a game changer. I was able to see the orange peel as I sanded. When it was done, it looked like glass. There were no ripples or any waves left."

Ian

✓ Verified Purchase

★★★★★

"Blocked over standard block. Wow what a difference!!! This thing is unreal."

Peter Robichaud

✓ Verified Purchase

★★★★★

"Works great! Does exactly what it claims. My panels come out noticeably flatter than before."

Ronald

✓ Verified Purchase

★★★★★

"Purchased the Linear blocking tool and sand paper set as a gift. The quality is obvious the moment you hold it. Completely different feel from standard foam blocks."

Daniel Shea

✓ Verified Purchase

★★★★★

"The polycarbonate body is incredibly rigid — no flex, no waves. I'll never go back to foam blocks. Best tool investment I've made in years."

Mike T.

✓ Verified Purchase

★★★★★

"Backed by a lifetime warranty and made in the USA. Linear clearly stands behind their product. The results speak for themselves."

Chris W.

✓ Verified Purchase

Built for real bodywork

The Linear Guarantee

Our Polycarbonate Sanding Blocks will deliver flatter results than your current blocks — guaranteed.

Made in the USA
Limited Lifetime Warranty

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Specialty Sets

Hyperflex, Mini Detail, and wet sanding kits for precision work.

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  • Linear L-411, L-417, L-418 High Build DTM Epoxy Primer kit
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Linear L-411, L-417, L-418 High Build DTM Epoxy Primer kit

$399.00
$374.00 $399.00
Sale Sold out
Shipping calculated at checkout.
Color: Blue
Kit

24 in stock

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From the Linear shop

See the finished builds

Real Linear project cars and the paint colors used on them.

Explore paint colors

Use the controls, arrow keys or swipe to explore projects.

Free Tech Tips & Tutorials

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Where To Buy

  • Linear Blocking Tools partner logo

    The Spray Source | USA · Canada · Worldwide

    A one-stop shop for tools, supplies, and paint. Ships to the USA, Canada, and worldwide (except Australia).

    Shop Their Site 
  • Linear Blocking Tools partner logo

    Linear Blocking Tools | Australia

    The only authorized retailer in Australia.

    Shop the Australian website 
  • Linear Blocking Tools partner logo

    Auto Body Toolmart | USA

    America's foremost direct distributor of specialty auto body tools and equipment. Over 37 years serving professionals.

    Shop Auto Body Toolmart