Replaceable Pin Vise Resin Drill Set for Drilling! Material: Aluminum; Size: 3.7 inches (9.4 cm); Set Contents: 0.3 x 0.8 x 0.8 inches (0.8 x 2, 1.0 x 2, 1.2 x 2, 1.5 x 2, 2.0 x 2, 1 pin vice handheld rotary type, easy to use. This is a high precision pin vise that is useful for precision drilling work, such as modifying scale models that open when the drill head is held in hand and rotated vertically.