1. Create a Website: Set up a professional and user-friendly website to showcase your Arrow Brand bricklaying trowels. Include high-quality product images, detailed descriptions, pricing, and any other relevant information. Make sure your website is mobile-responsive and easy to navigate.

2. E-commerce Platform: Consider integrating an e-commerce platform to your website that allows customers to browse products, add them to their cart, and make secure online purchases.

3. Search Engine Optimization (SEO): Optimize your website for search engines to ensure that potential customers can find your products when they search for bricklaying trowels or related terms. Use relevant keywords in your product descriptions, meta tags, and headings.

4. Content Creation: Regularly create valuable and informative content related to bricklaying, construction, and DIY projects. This can include blog posts, how-to guides, video tutorials, and more. This will not only help with SEO but also establish your brand as an authority in the field.

5. Social Media Marketing: Utilize social media platforms like Instagram, Facebook, and Twitter to showcase your products, share customer testimonials, and engage with your audience. Run targeted ads to reach potential customers based on their interests and demographics.

6. Email Marketing: Build an email list by offering incentives such as discounts or informative ebooks in exchange for subscribers' email addresses. Send out regular newsletters featuring product updates, promotions, and helpful content.

7. Online Marketplaces: List your products on popular online marketplaces like Amazon, eBay, or Etsy. These platforms already have a large user base searching for products, which can help increase your product's visibility.

8. Influencer Collaborations: Collaborate with influencers or bloggers in the construction and DIY niche to promote your Arrow Brand bricklaying trowels. Influencers can provide authentic reviews and demonstrations to their followers.

9. Google Ads: Run targeted Google Ads campaigns to appear at the top of search results when users search for relevant keywords. This can drive immediate traffic to your website.

10. Customer Reviews and Testimonials: Encourage customers to leave reviews and testimonials about your products. Positive feedback can build trust and influence potential buyers.

11. Networking and Partnerships: Partner with other businesses in the construction industry, such as hardware stores or construction companies, to promote your products to a wider audience.

12. Analytics and Monitoring: Use tools like Google Analytics to track website traffic, user behavior, and conversion rates. This data will help you refine your strategies and optimize your online presence.

By implementing these strategies, you can effectively promote and sell your Arrow Brand bricklaying trowels online, making them accessible to a wide network of potential customers.