Function-- Long T-handle ratchet wrench, sliding handle with spring tension tap, and can be extended to the full length in both directions for added leverage. Can also be used on left tap, reamers, screw extractors and other tools. Works well--- Drill bits can punch a blind hole, the cutting does not remain, the stroke is smooth, easy to enter the bottom hole. The cutting action is good, cutting material with continuous crimping, inner wall with axial groove, through-hole machining, high-speed machining. High quality--- Made of forged alloy steel (HSS), high hardness, durable and sturdy. Surface coating anti-corrosion treatment, the pliers are forged from alloy steel, the clamping is strong and the size can be adjusted. The forward and reverse ratchet can be adjusted, the left and right rotating thread, can be operated with one hand. Alloy steel forging: special material, long service life, adjustable width. Humanized design--- User-friendly adjustment switch, three-position gearbox for quick and efficient action. The middle is the locking button that can lock the mounting accessory. Diamond-shaped textured anti-skid design at both ends of the head and tail, beautiful and practical. Size and package--- Thread tap size: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25; Wrench length: 250mm 1 x T-handle adjustable ratchet wrench + 5 x taps.