Upgrade Kit: To make it more user-friendly, we have expanded the centre hole width of the 6x6 post base from 10mm to 16mm (0.63 inch) and the length from 30mm to 50mm (1.96 inch). The modified galvanised post base fits perfectly with J-bolts and most screws Anti-Corrosion Coating Design: The Post Anchor Bases are manufactured from high quality Galvanized steel plate which is coated with a galvanized coating to protect it from rust and corrosion from the wet environment. This coating ensures that the post base is protected from air, soil and water damage 1inch Standoff: This 6x6 deck post anchor base, 1 inch above the concrete, keeps the bottom of the Post Base better ventilated and the wood dry to the maximum, reducing erosion and damage to the wood from ground soil and reducing stake consumption Most Complete Kit: Compared to other post bases on the market, our post base kit includes 2 pcs 6x6 post bases, 20 pcs 304 stainless steel flanged Phillips power screws and 2 pcs matching concrete anchor. This saves you time and reduces the need to buy separate screws Reliable Support: 6x6 post anchor bases are used to securely anchor wooden posts to concrete, creating a complete support system specifically designed for the construction of decks, patios, gazebos or pergolas. The 6x6-inch posts are strong enough to support twice the weight of the frame, and the bases of the posts are stronger, more stable and wind-resistant Color: As shown Material: Galvanized steel Package Contents: 2 pcs 6x6 post bases 20 pcs 304 stainless steel flanged Phillips power screws 2 pcs matching Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.