Thumbs and Grapples for your Excavator. Main Pin Thumbs, Progressive Link Thumbs, and weld on Universal Thumbs. Heavy Duty Grapples, multiple tine configurations available. CP, JRB and Stanley Thumbs and Grapples for all sizes of excavators fitting various styles and sizes of pins and couplers. Unsure which product is best for you or have questions about a product? Contact one of our product experts at 844.311.7538 - chat with us - use our product finder at the top of this page - or email us at firstname.lastname@example.org.