supply of set of 12 different sizes(one set consisting of 6x7mm, 8x9mm, 10x11mm, 12x13mm, 14x15mm, 16x17mm, 18x19mm, 20x22mm, 21x23mm, 24x27mm, 25x28mm, 30x32mm) of double ended ring spanners as per is: 2029 - 1998 and made up of chrome vanadium(31crv3) steel, also fully treated to 44-48 hrc for increased work life, rust proof matte finish. makes: taparia/ everest/ groz/ eastman/ venus. note: one sample set should be got approved before effecting bulk supply.set of 12 different sizes(one set consisting of 6x7mm, 8x9mm, 10x11mm, 12x13mm, 14x15mm, 16x17mm, 18x19mm, 20x22mm, 21x23mm, 24x27mm, 25x28mm, 30x32mm) of double ended ring spanners as per is: 2029 - 1998 and made up of chrome vanadium(31crv3) steel, also fully treated to 44-48 hrc for increased work life, rust proof matte finish. makes: taparia/ everest/ groz/ eastman/ venus. note: one sample set should be got approved before effecting bulk supply.,set of 12 different sizes(one set consisting of 6x7mm, 8x9mm, 10x11mm, 12x13mm, 14x15 mm, 16x17mm, 18x19mm, 20x22mm, 21x23mm, 24x27mm, 25x28mm, 30x32mm) of double ended ring s panners as per is: 2029 - 1998 and made up of chrome vanadium(31crv3) steel, also fully treated to 44-4 8 hrc for increased work life, rust proof matte finish. makes: taparia/ everest/ groz/ eastman/ venus. note: one sample set should be got approved before effecting bulk supply. [ warranty period: 12 months after the date of delivery ] ]