Steel bench block with silicone base from Wire Elements.
This two piece set is just what you need for wire at your work bench.
The set includes: one round steel bench block and one round rubber base.
The rubber base is vulcanized firm and absorbs shock.
This is a well made set, and allows one to hammer without creating excess noise and vibration at the bench.
Measurements: Steel block: 3 Inches (75mm) in diameter and 3/4 Inch (19mm) thick. Rubber base is 3 Inches (75mm) in diameter and 1 Inch (25.4mm) thick.