Reddit reviews HHIP 3600-0042 Machinists' Bench Block (Holes 1/8~5/8 Inch)

3" Diameter x 1-1/2" H; Made from steel-hardened and GroundThe knurled side provides a good gripping surface; V-groove across the face accommodates round and odd shaped stockMade from steel-hardened and Ground Holes from 1/8 to 5/8 (3-16mm) diameterA handy tool for holding work when driving pins, drilling, etc.; 3" 1-1/2" HHoles from 1/8 to 5/8 (3-16mm) diameter