Features: 1) product:DIN3110 double open end wrench 2) material: Cr-V steel 3) surface: chrome plated Features:1) product:DIN3110 double open end wrench2) material: Cr-V steel3) surface: chrome plated4) 6x7, 8x9,..., 27x32; 1/4"x5/16", 5/16"x3/8",..., 1 1/16"x1 1/4"