Lightweight Aluminum with rubberized handle grips. Length: 20 (cm) / 8 (inch), Weight: 350 (grams) /. 77 (lb) Jaws (12 cm / 4. 5 inch) with urethane grips ensure a strong, non-slip hold when stretching canvas or silk. Wider format jaws designed to handle both small and large canvases easily. Made in Japan.