Strong Stainless Steel scalpel handle (blade not included).Handle Number: 4Length: 100mmSlotted to accept the following blades (available separately):Blade No. 21 - B8R00185 Blade No. 22 - B8R00186 Blade No. 23 - B8R00187 Blade No. 24 - B8R00188 (Blades are surgical-quality steel supplied in metal foil packs).