For use in structurally-sound staircase framing. Tread fastener: 2-SDS-1/4" x 1-1/2". Stringer fastener: 3-SDS- 1/4" x 1-1/2". This connector was designed to help resist download forces. SKU: 42708363 MFG: TA9Z Shop more products by Simpson Strong-Tie. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Free shipping over $35 Normally ships within 24 hours $7.99 Quantity In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: 12 gauge ZMAX finish Stringer fastener: 3-SDS-1/4" x 1-1/2" Tread fastener: 2-SDS-1/4" x 1-1/2" For use in structurally-sound staircase framing This connector was designed to help resist download forces Cancer - www.P65Warnings.ca.gov. FEATURES MFR: TA9Z SKU: 42708363 UPC: 707392828402 Brand: Simpson Strong-Tie