Hardened and ground steel parallels for workshop use. Supplied in pairs for packing or levelling components prior to machining in tool rooms or machine shops. Supplied in Pairs. | Hardness: HRC:58 – 62 | Accuracy: ?0.005mm | | 28 Piece Set | Contents: fourteen pairs of the following sizes: | 14 x 10 x 150mm, 16 x 10 x 150mm, 18 x 10 x 150mm, 20 x 10 x 150mm, 22 x 10 x 150mm, 24 x 10 x 150mm, 26 x 10 x 150mm, 28 x 10 x 150mm, 30 x 10 x 150mm, 32 x 10 x 150mm, 35 x 10 x 150mm, 40 x 10 x 150mm, 45 x 10 x 150mm, 50 x 10 x 150mm. | | Supplied in wooden storage box.