Schaefer - Double Alum. Block/ Universal Head Cat. No. SCH70425 Weight 1 lbs	$211.00
Aluminum Double Block.     * High strength head retains three-way locking feature.     * White Delrin Sheave.     * Use with 7 Series adapters for custom applications. Dimensions: Imperial & Metric Length: 5 27/32" 148 mm Width: 2 1/2" 64 mm Overall Thickness: 2" 51 mm Weight: 12.4 oz. 352 g.