BPIBCR010$3.00Length/BallSize: 5/16 with 4mm ball3/8 with 4mm ball1/2 with 4mm ball9/16 with 4mm ball5/16 with 4mm ball3/8 with 5mm ball1/2 with 5mm ball9/16 with 5mm ball5/8 with 5mm ball