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    Product Description

    • Easton X10 uses the #1 nock collar
    • Easton X10 Protour 670, 720 & 770 uses the #2 nock collar
    • Easton X10 Protour 520, 570 & 620 uses the #3 nock collar
    • Easton X10 Protour 420 & 470 uses the #4 nock collar
    • Easton X10 Protour 340 & 380 uses the #5 nock collar