With a 1 in. ( 25 mm ) Tajima firm blade, the utility knife handles sheet materials, plywood, and thick substances. The handle has an in-handle storage compartment with two spare blades, offering comfort and ease of use. The 0.03 in. ( 0.7 mm ) thick tempered blade sleeve exceeds standard stainless steel sleeves' hardness, featuring the iconic and durable FIN design for added functionality.