Tooltech Xpert Compact Pro Caulking Gun is ideal for tight spaces and tricky corners, meeting the need of different working angles. Works with 10 oz of silicone tube. Its made of heavy-duty die cast aluminum, ergonomic and incredibly durable. The 15 oz. heavy-duty Sealant Gun makes caulking effortless and comfortable for all-day use. The hex steel push rod mechanism provides an 18:1 thrust ratio for caulking materials. The silent squeeze mechanism prevents squeaking when activated, while still ensuring sufficient pressure. Our grip handles are ergonomically designed. Unique front drip-proof trigger ensures that the caulk does not continue to flow.