Peak Design Bolt Pack

One pair of thumb-drive bolts which clamp to any strap up to 1.5 cm (0.6”) thick and one pair of hex-drive bolts which clamp to any strap up to 1.6 cm (0.7”) thick. Thumb-drive bolts allow easy clamping and unclamping. Hex-drive bolts for more secure/permanent installation or thicker straps. Thumb-drive bolt length: 0.2 cm (0.8") x head diameter: 18 cm (0.7”). Hex-drive bolt length: .22 cm (88 in) x head diameter: .115cm (45”). Shaft diameter (both types): 4.9 mm (0.2"), M5 (31.8) TP.