SPIRAL STEEL BONING, FOR CORSET& DRESS 6 MM (1/4") (MADE IN THE USA) (4" = 10 CM) CAPPED WITH GALVANIZED CAPS TO ENSURE NO DAMAGE TO THE FABRIC GREAT QUALITY WITH GREAT VALUE!!! OUR SPIRAL BONES MADE FROM STURDY COIL-SPRING GALVANIZED WIRE, RUST RESISTANT. THIS TYPE OF SPIRAL BONE PROVIDES A LOT MORE SUPPORT THAN PLASTIC BONING. THE BENEFITS OF MAKING A CORSET WITH THIS TYPE OF BONING ARE WELL WORTH THE ADDITIONAL COST THAN PLASTIC BONES. NOT ONLY WILL BE MUCH MORE COMFORTABLE, BUT IT WILL LAST MUCH LONGER AND IS FAR LESS LIKELY TO LOSE IT'S SHAPE. STEEL SPIRAL BONES ARE UNIVERSAL STYLE BONE USED IN MANY THEATERS AND BALLET COMPANIES