Click to expand Tap to zoom T419 Ball Joint 4.9mm - Open (8) by Xray Save $-9.50 $9.50 | / SKU XY302663 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This is a set of eight replacement ball joints for the XRAY T4 1/10th scale touring car. Molded composite 4.9mm ball joints, open on both sides, for connection to 4.9mm ball.