Improved Recip Blades. Lenox says its T2 demolition and wood-cutting reciprocating-saw blades now cut 25 percent faster than earlier models and last twice as long. According to the company, a change in the shape and pattern of the teeth reduces friction and helps the blades cut faster in nail-embedded wood. A five-pack of T2 blades costs $14 to $25, depending on the size and specification. Lenox, 800/628-3030, lenoxtools.com.