Click or scroll to zoom Tap or pinch to zoom Acme 58 1/2 Brass FingerGrip Whistle ACME Save 0% $29.99 or 4 x fortnightly payments of $7.50 with Own it, interest free from $10 per week. More info Size guide 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Size guide Add to cart Brass Fingergrip Whistle 477 58 1/2 with cushioned fingergrip. As used by the top Netball & Aussie Rule umpires.