Outer diameter of spring: 60 (mm) Spring inner diameter: 50 (mm) Free height: 80 (mm) Material: spring steel Purpose: hardware Rotation direction: pupal Surface treatment: chrome plating Scope of application: fruit branch shear spring Specifications: 1. Cocoon spring is durable: spring steel is wound. Strong. Durable 2. Multi-purpose: branch pruning, used for branch pruning. Fruit picking is used for fruit picking and pruning. Bonsai trimming, used for bonsai decoration trimming 3. Product advantages: the volute spring made of high-quality stainless steel is suitable for any tool using spiral spring. Use basic DY skills to easily install how to measure the correct size When the pruning pliers are in the open position, you should see two lugs/knobs, one on each handle, and the spring is installed on it. The measurement includes the clearance of the lug/knob, that is, according to the size you need, the spring needs to be slightly compressed when installed in the open position, which will ensure a firm installation. The volute spring used as the Secateur spring is a conical compression spring, which is designed so that the coils will not squeeze each other under compression, thus allowing different rows It is also suitable for kitchen scissors, and is very suitable for kitchen scissors to cut food. The product is lightweight. After installing the scissors, the use of the scissors becomes lightweight and labor-saving. Package Included: 1*Spring accessories