This linked leather cock strap contains sturdy metal pins (5 in the larger one, 4 in the 2 smaller ones) with rounded ends. Although these pins do not come with spiked ends they will certainly dig into the penis if arousal takes place. Place the cock straps behind the balls and around the shaft of the penis for maximum impact. All 3 linked cock straps come with press stud closures enabling the fit to be adjusted. 100% real leather.