trial frame 1.grey colour with different PD ranges. 5pcs/case ... .convenient, precise measurement 3.high quality but low price optical trial frame* Feature1, grey color, the frame temple is adjustable2, PD ... ,60,62,64,66,68,70;3, alloy material;4. trial frame set, 5pcs each case5. net weight 0.1kg/pc 6 ...