An engraving block gives the hand engraver and stone setter a steady, rotating grip on small work so the tool can stay put while the piece moves. The GRS MicroBlock One from Glendo GRS is engineered for the ideal balance of stability and maneuverability at the bench. Designed for precision stone setting, hand engraving, and other detailed work under magnification, it provides dependable support with a streamlined, cost-effective design. Low-profile and steady in the hand, it turns smoothly beneath your tools for controlled, confident cuts.The MicroBlock One weighs 3.6 lbs (1.64 kg) and features a 3" (76mm) ball, a jaw width of 1.8" (46mm), and a jaw height of 0.87" (22mm). Maximum jaw opening diameter is 2" (50mm), and the block stands 3.375" tall when placed on its plastic base.Features Self-centering jaw system for quick, secure work holding Low-profile design optimized for microscope and magnified work Internal rotational brake adjusts from free spinning to fully locked Simplified bearing system for smooth, consistent rotation Durable, cost-effective construction without sacrificing performance Accepts GRS pin hole jaw accessories (sold separately) CompatibilityThe MicroBlock One uses the same pin hole jaws as other GRS MicroBlocks, so accessories can be shared across compatible models.NotesAll compatible pin hole jaw accessories are sold separately.