MR-SL-10 x 4.5 Prop Set 3DR Solo, Black (4)

MR-SL-10 x 4.5 Prop Set 3DR Solo, Black (4) Item No.MASSL10X45CB4 ----------- Are these 4.5 inch length, or 10 inch length props? ------- I have a Cox Pee Wee RC Engine needing small 4.5 inch length propellor. ( Do you have any?)