
These washers (except M10) are not stainless steel. They are strongly attracted to a magnet, like ordinary steel. Stainless steel is not magnetic. Stainless steel refrigerators have a steel plate behind the door that you can attach magnets to. Maybe they have some kind of stainless steel washer in the kit, they claim stainless steel washers. Test them yourself and judge.

๐ท Fermtech Double Blast Wine Rinser & Beer Bottle Washer โ Kitchen, Lab, Bar Glass Cleaner with Laundry Tub Faucet Adapter (Black) โ Wine Cleaning Equipment for Better Maintenance
18 Review

๐ฉ FullerKreg 5/8" x 1-3/4" OD Stainless Flat Fender Washers, 1-3/4" Outside Diameter, 0.120" Thickness, 6 Pack, 18-8 (304) Stainless Steel
13 Review

Yellowstone Season Complete Movies Collection
3 Review

High-Quality 3-Foot Black Ethernet Patch Cable 5-Pack by Amazon Basics: Snagless RJ45 Cat-6 for Reliable Internet Connections
8 Review

๐ Carriage Prime Line Products GD52103
6 Review

๐ฉ Hard-to-Find Quick Fastener 014973253790 - 4 Piece Set
7 Review

POWERTEC 4 Inch 20 2 Inch QTB1005 T Slot: A Revolutionary, High-Quality Power Tool Accessory!
8 Review

๐ฉ 5-Pack of M8x60mm Stainless Steel External Hex Expansion Bolts by Yasorn
10 Review