Precision Steel Parallel Set of Hardened and ground steel parallels for workshop use. Features and Benefits • Supplied in wooden storage box to keep all pieces together • Hardened and ground steel construction for durability • Ideal for packing and leveling components before machining Contents • Pair of 10 x 4 x 160mm • Pair of 14 x 4 x 160mm • Pair of 18 x 4 x 160mm • Pair of 22 x 4 x 160mm • Pair of 26 x 4 x 160mm • Pair of 30 x 4 x 160mm • Pair of 34 x 4 x 160mm • Pair of 38 x 4 x 160mm • Pair of 42 x 4 x 160mm Notes • Supplied in pairs • Hardness: HRC:58 - 62 • Accuracy: ±0.005mm