STAINLESS STEEL CROWN GAUGE for Breweries & Home Brewer kits. Check your capped beer for proper crimping, and prevent spoiled beer. | MANUFACTURED TO EXACT SPECIFICATIONS suggested by bottle cap manufacturers. Precise holes (1.120 in, 1.125 in, 1.130 in, 1.135 in) needed for testing crimped crowns (caps) on 26mm bottles | EASY TO USE GO/NO-GO GAUGE - The two center holes (marked"GO") represent the lower and higher allowable tolerance for a properly crimped 26mm bottle. The two outer holes (marked "NO-GO") represent crimped crowns either too small, or too big for the 26mm bottle. | VITAL FOR QUALITY CONTROL - increase brew quality and shelf life by ensuring proper capping of your 26mm crowns | 100% GUARANTEE - Works with all crimpers, cappers and crowns for 26mm bottles