Metal spikes go through steel tabs at the end of rubbers for easy installation with a hammer. Includes 4 spikes.

Rubber construction stands up to a season of hard-throwing hurlers.Two holes on each end of the pitching rubber allow for accurate installation. Four spikes are included for setting the rubber into place. Designed for installation on the pitcher's mound where the pitcher pushes off to increase throw velocity. Metal spikes go through steel tabs at the end of rubbers for easy installation with a hammer. Youth Size - 4" x 18".

Date First Available: July 1, 2003. Best Sellers Rank: #309,400 in Sports & Outdoors. Customer Reviews: 4.4 out of 5 stars 210 ratings 4.4 out of 5 stars. : B0018ODOL4. Sport Type: ?Baseball. Size: ?4" x 18". Part Number: ?1148466. Manufacturer: ?Sport Supply Group, Inc. Material: ?Steel. Color: ?White. Brand Name: ?MacGregor. Item Dimensions LxWxH: ?22 x 5.6 x 0.95 inches. Package Weight: ?1.95 Kilograms. Item Package Dimensions L x W x H: ?21 x 4 x 0.75 inches.