Blue Force Gear Low Profile All-Purpose Metal Sling Hook 1in Black 1in P. The MASH Hook is activated by squeezing the center tabs together which opens the gate for installation and removal from eyelets. Specifications for Blue Force Gear Low Profile All-Purpose Metal Sling Hook 1in: Manufacturer: Blue Force Gear Color: Black Features of Blue Force Gear Low Profile All-Purpose Metal Sling Hook 1in Sling Hardware and Accessories - Enhance your Vickers Sling or any other sling to your weapon or application Package Contents: Blue Force Gear Low Profile All-Purpose Metal Sling Hook 1in Blue Force Gear P-MASH-100: Low Profile All-Purpose Metal Sling Hook 1in Black 1in