The compatibility of X-acto handles with famous X-acto blades creates knives so versatile they can accommodate the widest range of cutting requirements. The No. 2 Knife features a 5 in. aluminum handle, for use with for precision cutting of medium to heavy weight materials like wood, board, paper, plastic, metal, cloth, film and acetate. No. 2 knife comes with a no. 2 blade. Knife set contains an additional assortment of 5 blades. X-acto nos. 3002, 3202, and 5212 are for use with the following X-acto blades: #2 Large Fine point and #2 Blade Assortment , #18 Heavyweight Chiseling , #19 Angled Chiseling ,