Single side design with serrated surface provides fast, positive operation and a comfortable thumb position with minimal bulk for easier carry. Wide - Extra large, full-length thumb pad can be used full size for maximum thumb engagement or custom contoured to meet special requirements. Tactical - Shorter, slimmer thumb pad won't snag on holster or clothing; helps prevent accidental disengagement during the draw. Minimum size; best for concealed carry or tactical use. Minimum size is ideal for concealed carry. Bullet Proof (BP) models are precision machined from billet steel for installations where only the best in fit, finish, strength, and durability will do. Availab Mfg: Wilson Combat SPECS: Steel, blued or stainless, matte or polished finish. Pin diameter is .002" oversize; fitting required. Pad Size: Wide - 1" (2.5cm) long, 3⁄16" (4.8mm) wide. Tactical - .750" (19mm) long, 1⁄8" (3.1mm) wide. Bullet Proof (BP) - .750" long x .230"