Get flatter panels with Linear

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

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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

More ways to get it flat.

Three T-Handle lengths for controlled blocking. Two L-Series epoxy sealers for the step before basecoat.

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

Linear T-Handle Flex Set — 24 in, 16 in & 10 in

High-strength polycarbonate in 24″, 16″, and 10″ lengths. CNC cut and routered. Backed by a lifetime warranty and satisfaction guarantee.

$140.00Shop the T-Handle set
Preorder

L-Series Epoxy Sealers

Wet-on-wet sealer or direct-to-metal epoxy. Each 1:1 kit makes two sprayable gallons.

Estimated to ship around October 19, 2026.

Linear L-117 Black Epoxy Sealer and L-121 Epoxy Sealer Activator, one gallon each Preorder: Linear L-117 Black Epoxy Sealer Kit — 2 Sprayable Gallons$440.00 / kitView preorder → Linear L-118 Gray Epoxy Sealer and L-121 Epoxy Sealer Activator, one gallon each Preorder: Linear L-118 Gray Epoxy Sealer Kit — 2 Sprayable Gallons$440.00 / kitView preorder →

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

28 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