Sturdy tommy bar is engineered for durability and comfort. Wilton 5-1/2 Throat Depth, 8 Max Capacity, Heavy-Duty F Sliding Arm Clamp 2,660 Lb Clamping Pressure 86640 - 90929209 ; Frame Material, Steel ; Finish, Black... The Wilton® classic Series F-Clamps are among the first of their kind. Bostwick Braun | JPW Industries Wilton® 86640 F-Clamp, 5-1/2 in Throat Depth, 8 in Clamping Capacity Wilton Tools 86640 8 Heavy Duty F-clamp 2 Wilton GSM20, Heavy Duty F-Clamp, 8 Heavy Duty F-clamp 8 Inch Drop forged arm provides minimal flex under heavy work loads. Wilton 86640 GSM20, 8" Heavy Duty F-ClampThe Wilton Classic Series F-Clamps are among the first of their kind. With a timeless design, this series i Black oxide spindle resists wear and tear while impeding rust. Heavy duty quick twist pads are simple and fast to replace.