[140 PIECE ASSORTMENT] This set includes 140 round ended ​ keys in 7 popular sizes from 8mm to 30mm giving you a practical range for maintenance replacement and workshop ​. It helps you handle different shaft and hub connections without searching for separate pieces.
[DURABLE CARBON STEEL] Made of A3 carbon steel these parallel keys offer dependable strength for everyday fastening tasks. The material is rust ​ wear ​ and built to support repeated use making it a reliable choice for machinery parts that are removed and reinstalled often.
[SMOOTH PRECISION FINISH] Each shaft key is produced with an accurate process to provide a neat shape and smooth surface. The clean finish helps improve fitting performance reduces burr related issues and makes installation more convenient during repair assembly and equipment servicing.
[SORTED STORAGE BOX] The included plastic ​ keeps every size organized and easy to identify saving time during work. Separate compartments help prevent mixing while also making the set easier to carry store and access whether you use it in a garage workshop or maintenance area.
[WIDE EQUIPMENT USE] Designed mainly for fastening equipment that is frequently disassembled this key assortment is suitable for a variety of mechanical repair and replacement needs. It is a convenient hardware set to keep on hand for routine servicing adjustment and part installation tasks.

Spec:
Description:
This round ended ​ key set is made of ​ A3 carbon steel, rust-proof, wear-​, accurate, and smooth. The plastic box makes it easy to recognize and storage your parallel keys. It is suitable for fastening many different equipments.
Features:
Combine a mix size of 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, satisfy your different needs.
Rust-proof, wear-​, and high expanding ability. 140pcs are enough for multiple choices.
Equipped with a plastic box, you can classify these ​ keys in an organized manner, more convenient to