Rockler Woodworking and Hardware has upgraded the F-style clamp as part of the Sure-Foot™ line. The Sure-Foot F-Style Clamps have a 2-1/2″ throat depth, a no-tip base to leave both hands free, rigid zinc-plated steel bars to ensure even pressure throughout the joint; and a quick-release clutch for a tight, no-slip fit that can be loosened instantly for precise positioning. A large clamping face is machined smooth for non-marring contact. The Sure-Foot F-Style Clamps are available in fourth lengths: 6 inches (item 40333), which sells for $16.99; 12 inches (item 40334), which sells for $17.99; 18 inches (item 40335), which sells for $18.99; and 24 inches (item 40339), which sells for $19.99.