6Pce 8mm T-Slot Zinc Coated Milling Step Block Clamping Set *save yourself valuable setup time with this quality clamping set. Designed to secure a wide variety of work setups *includes: 2pce step blocks (size:25x25x42mm), 2pce clamp straps (size:100x25x15mm), and 2pce M6 studs with flanged nuts and T-slot nuts used on T-slot 8mm