Crown Bees Beebasics Easytear Tubes Kit, Beehut Sturdy weather-resistant PVC housing with outside ribbed channels to shed rain and inner lip to protect nest holes from intruding water Simple installation with convenient attachment holes in end cap 25 easy tear tubes for spring mason bees and 25 easy tear tubes for summer leafcutter bees Easy tear tube has viewing hole to identify used tubes Buy bees using 10% off coupon with mason bees shipped Nov 1-april 15 and leafcutters bees shipped may 1-aug 15