HomeAppsToolsDrillstring Toolbox PremiumApps like Drillstring Toolbox Premium Here are some great alternatives to Drillstring Toolbox Premium by T H Hill Associates : Quail Tools ★4.8 Dr DE Lite - Drilling Engineer ★4.3 Flange Bolt Size & Torque ★4.6 Fabricators Handbook ★4.3 TracPipe CounterStrike Sizing ★3.5 Torque Calculator ★3.8 Machine Screws Drill/Tap Info ★4.7 The Driller's Toolbox ★3.7 Piping Toolbox: ASME, Fitting ★3.3 WARDFLEX Jobsite Assistant ★4.0 DD Toolbox ★3.8 ToolBox ★4.1 Sizing US/CA ★4.6 Bosch Toolbox ★4.5 Piping Engineering Pro ★3.9 Piping Engineering ★4.0