4mm thick Japanese stainless steel blade with aluminium polished backing plate. Soft grip 2-component handle, for comfort during use, secured by hidden rivets. This Ragni Stainless Steel Taping Knife is 8 inches in size and grey in color. It features a 4mm thick Japanese stainless steel blade with an aluminium polished backing plate and a soft grip 2-component handle for comfort. The handle is secured by hidden rivets.