Combination Spanner 1)high quality polishing with satin coating 2)hardness 38~43HRC 3)supply ability:50,000 pieces per day Superior Quality Combination Spanner 1.About product:material:45# carbon steelsize:6mm~32mmdelivery time:30-45 days 2.About factory:Our main products are double open end spanner, ring spanner, combination spanner, adjustable spanner, socket spanner, cutting pliers, saw blade, ...