Single-piece PVC tube. Straight cut end allows flush ground mounting, and an accessory lens guard or rock guard may be ordered separately, but is not required. Angled cut end requires the top 3" installed above ground for maximum vertical spot aiming with shielding being provided on three (3) sides. Patented Lamp Holder - Durable silicone rubber lamp holder has integral fins to allow the height and angle of the lamp to be adjusted without any mechanical moving parts. Fixture offers 360° lamp rotation and up to 45° off vertical aiming adjustability, restricted only by the cutoff of the housing.