About this item:- Brand JIAKAI
- Recommended Uses For Product Noise Protection
- Size 20 Piece Set
- Style Uncorded
- Item Form Pair
- Quantity: 20PCS.Color: black,Material: magnet,plastic
- Size (LWH): 3.7 inches, 3.1 inches, 0.7 inches
- with 4 different size 5/ 7/ 9/ 13 mm inner diameter
- Ferrite core with plastic cover; Helps to reduce EMI on AC power lines