The Top Snapper canvas snap tool takes the struggle out of snapping your boat canvas! Experienced boaters know that putting up and removing canvas top is seldom easy. Canvas shrinks, snaps corrode, and aligning snaps can quickly become a two person job. The Top Snapper's two stainless steel blades slip over the snap shoulder to align and snap it closed. The longer blade is ideal for the inside snaps, the shorter blade for the outside snaps. Both blades can be used to either snap or unsnap your snaps - without tearing your boat canvas.