Description:OOTDTY Features: The pole is made of steel products, induction hardened, heat treatment. The satin handle provides more comfort and less chance of slipping. The key sizes are stamped in the middle for easier size identification. Stamped markings provide constant visibility to prevent wear over time. Specification:Optional size: 1#5.5x7mm, 2 #8x10mm, 3 #9x11mm, 4 #10x12mm, 5 #12x14mm, 6 #13x15mm, 7 #13x16mm, 8 #14x17mm, 9 #16x18mm, 10 #17x19mm, 11 #18x21mm, 12 #19x22mm, 13# 22x24mm Material: 45# steelLength: Approx. 1 #12.2cm(4.80in)2 #14cm(5.51in)3 #14.9cm(5.87in)4 #16.5cm(6.50in)5 #19cm(7.48in)6 #22cm(8.66in)7 #22cm(8.66in)8 #22.5cm(8.86in)9 #25.5cm(10.04in)10 #26cm(10.24in)11 #29.5cm(11.61in)12 #30cm(11.81in)13 #30.5cm(12.01in)Color: Black Quantity: 1 pcNote: Transition: 1cm=10mm=0.39 inchNo retail package. Please allow 1-3mm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1 x Box End Key (Other accessories shown in the picture are not included.)