<p>▼ This listing: Orange, 5/32" (4mm) spacing for deck gaps. </p><p>▼ Other options: Red 1/8", Orange 5/32", Yellow 13/64", Green 1/4", Blue 5/16" or MIX Pack (4 pcs of each size).</p><p>▼ Don't know what size to fit 54% of people choose 1/4", PayandPack recommends the MIX Pack (4 pcs of each size) for starters.</p>