3M Pro Grade Precision 2-1/2 in. x 4-1/2 in. x 1 in. 120-Grit Fine Block Sanding Sponge 24001PGP-F-B - The Home Depot
Dura-Block Ultra-Flex™ 16 PSA Block AF4435
3M Full Size Sanding Sponge Wet/Dry Fine 3-3/4" X 2-5/8" X 1" | Holdahl Company, Inc.
Dura-Block Sanding Block AF44HL - FREE Hard Plastic Putty Spreaders
Time Shaver Tools Preppin' Weapon Ergonomic Sanding Block, for Wet and Dry Sanding! Easy to Load, Plain Paper Sander! Red And Blue (2 Pack) - - Amazon.com