Suitable for rivet nuts in aluminium, steel and stainless steel. Medium-arms provide effortless functionality and pull through quick release mechanism. Features & Benefits:Suitable for rivet nuts in aluminium, steel and stainless steel.Medium-arms provide effortless functionality and pull through quick release mechanism.Rivet Nut Sizes: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1, M8 x 1.25, M10 x 1.5, M12 x 1.75mm.Model No. AK3988 Specifications: Model No AK3988 Brand: Sealey Includes: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1, M8 x 1.25, M10 x 1.5, M12 x 1.75mm Length: 345mm Nett Weight: 1.08kg Rivet Types: Aluminium - Yes, Steel - Yes, Stainless Steel - Yes, Structural - No