Specifications:

One 4-inch bare metal

One 6-inch bare metal

4-inch standard 5-Section One-electric one-chain

4-inch standard 5-Section Two-electric two-chain

4-inch medium with 10 sections, one electricity and one chain

4-inch medium with 10 two-electric two-chain

6-inch standard 5-Section One-electric one-chain

6-inch standard 5-Section Two-electric two-chain

6-inch medium with 10 sections, one electricity and one chain

6-inch medium with 10 two-electric two-chain