1/4"-20 x 1/2" Thumb Screw Stainless Steel - Black Knurled Round Plastic Knob - Standard/Coarse Thread Thumbscrew - Length: 0.500" - Proudly Built in USA - Package of (4) 4 sold2024 These are high quality corundum

These are high quality corundum abrasive stone grinding head wheels electric grinding accessories

such as for electric drill

Handheld frame grip is ergonomic

Picture Nails

Supporting used with straight grinder

1/4"-20 x 1/2" Thumb Screw Stainless Steel - Black Knurled Round Plastic Knob - Standard/Coarse Thread Thumbscrew - Length: 0.500" - Proudly Built in USA - Package of (4) 4 sold2024 These are high quality corundum1 4" 20 x 1 2" Thumb Screw Stainless Steel Black Knurled Round Plastic Knob Standard Coarse Thread Thumbscrew Length: 0. 500" Proudly Built in USA Package of (4) Thumb Screw Specs: Thread Diameter: 0. 250" (1 4") Thread Pitch: 20 (UNC) Screw Length: 0. 500" (1 2") Fully Threaded: Yes Minimum Thread Length: Full Thread Material: 18 8 Stainless Steel Knob Style: Knurled Round Knob Color: Black Knob Diameter: 0. 750" (3 4") Knob Height: 0. 313" (5 16")