Slack Adjuster Tools Set: High quality slack adjust wrench set is made for easy the adjusting or diagnosing malfunctioning of truck air brake systems, suitable for heavy-duty trucks, long-haul trucks, and tractor trailers Nice Design brake adjustment tools: 5/16" double square slack wrench features a ratcheting mechanism, which allows quick direction changes without removing the wrench from slack adjuster; the fork end release tool for releasing the tensioner button; both provide much convenience when adjust brake system Prime Material: 2 pc slack adjusting tool and wrench are made of sturdy carbon steel, definitely durable for long time use; the handles equipped with high quality rubber, offer you more comfortable grip during use Easily use: The slack release tool fits and holds great, you don't have to worry about it falling out like a pocket screwdriver does; the ratchet works well in limited room, and will easy the diagnosis and repairs of slack adjusters Efficient and Convenient Truck Tools: Our automatic slack adjust tools have the switch for tightening and loosening. So you don't have to flip the unit around and lose the angle advantage. It also will reduce hand fatigue during use, easy the adkjust and repaire at the same time Product description EXJIOTA High Quality Slack Adjuster Tools Set The ratchet wrench works well in limited room, and will easy the diagnosis and repairs of slack adjusters. The slack release tool fits and holds great, you don't have to worry about it falling out like a pocket screwdriver does; Designed for adjusting or diagnosing malfunctioning of truck air brake systems, suitable for heavy-duty trucks, long-haul trucks, and tractor trailers. 5/16" double square slack wrench Features a ratcheting mechanism, which allows quick direction changes without removing from slack adjuster Fork end release tool Design for releasing the tensioner button; provide much convenience when adjust brake system Durable rubber handles Handles equipped with high quality rubber, offer you more comfortable and firm grip during use