Kanai Hybrid II Round Washer M12, 50 pieces per bag x 2 bags = 100 pieces Both unopened and opened bags are available. The unopened bag has some scratches. Please be aware of this before purchasing. Individual sales are possible, so please comment with the quantity and price. If you need a dedicated coupler, I can include a new one for 800 yen each. These items have been stored for a long time, so there may be dust or small scratches. The photos show everything, so please take a look.