Universal Brass Antique Grandfather Winding Clock Key (Even) 5 Way Brass Clock Winding Key Even Numbers (2, 4, 6, 8, 10) (2) 2.75mm, 7/64n (4) 3.25mm, 1/8n (6) 3.75mm, 0.14n (8) 4.25mm,11/64n (10) 4.75mm, 3/16n Made in India Material: Brass