Bosch Bosch 5-1/4-in 21 TPI T-shank Bi-metal Jigsaw Blade Set ( 3 -Pack ) ; FREE Returns. Return it in store or ship it back for free. Eligibility rules apply For pipes, profiles, and sheet metal 10to 16 gauge, thin metals 1/16 In., to 1/8 In. thick (ferrous and non-ferrous), pipes less than 2-1/2 In. T-shank design for maximum grip and stability which fits 90% of all current jig saw makes and models. Blades For Thin Sheet Metal Bosch T321AF3 3 Pc. 5-1/4 In. 21 TPI Speed For Metal | Ubuy Jig Saw Blades For Metal For pipes, profiles, and sheet metal 10to 16 gauge, thin metals 1/16 In. to 1/8 In. · 21 TPI tooth design for smooth, very fast cuts · Bimetal construction for... Bimetal construction for durability and long life , Extra-long 5-1/4 In. Innovative Bosch Speed for Metal blades offer the fastest cuts and long life in thick or thin metal pipes and metal profiles. Bosch T-shank Jigsaw blade T144D (L)100mm, Pack of 5 overall length, 4-1/4 In., working length